[Retracted] A New Method for the Aggregate Proportion Calculation and Gradation Optimization of Asphalt-Treated Base (ATB-25)

Table 1

Main technical indicators of asphalt.

Technical indicators	Units	Measured values	Specification values
Penetration (25°C)	0.1 mm	67.1	60～80
Penetration index	—	−0.65	−1.5～+1.0
Softening point	°C	51.7	≥45
Ductility (15°C)	cm	67.5	≥40
Density (15°C)	g/cm^3	1.0066	Measured value
Mass loss after aging	%	0.05	−0.8～+0.8
Penetration ratio after aging	%	62.5	61
Residual ductility (10°C)	cm	23	8